Chicken Collagen from Law Market Value By-Products as an Alternate Source

Table 1

Collagen yields extracted from the chicken skin and bone using different extraction procedures.

Types of extraction	Average* skin collagen	Average* bone collagen
	preparation yield %	preparation yield %
Acetic acid	6.1 ± 1.0^a	4.4 ± 0.5
Citric acid	6.2 ± 0.1	4.1 ± 0.7
Sodium hydroxide	5.0 ± 2.1	4.1 ± 1.0
One-step acid & pepsin	38.7 ± 0.4	19.1 ± 3.0
Two-step acid & pepsin	40.4 ± 0.8	20.6 ± 2.9

^amean of four observations ± SD.
*the average (arithmetic mean) of four observations.